Turbine-blower.



1. H.` KANE. TUBBINE BLOWER.

APPLICATION FILED AUG. 22, 1910.

.l ,O l Yy OO l Patented* Feb. 13, 1912.

4 SHEETS-SHEET l.

P. H. KANE.

TURBINE BLOWER. APPLIOATION HLBDAUG. zz, i910.

1,017,001. Patented Feb. 13, 191.2.

4 SHEETS-SHEET 2.

P. H. KANE.

TURBINE BLOWER.

APPLICATION FILED AUG. 22, 1910` 4 SHEETS-SHEET a.

, P. H. KANE.

` TURBINE BLOWER.

APPLIOATION FILED AUG. 2z. 1910.

1,017,001. PatentedvFeb.13,1912.

.' 4 SHEETS- SHEET 4.

jofg

.i iwrmex ii. KANE, or Burrmno, NEW Yoan.

rU'maiNE-Briowm.

d *Y Speoicatio 'of Letter- Patent.

Aiipiicrian mea signage, icio.l serial natural.

Buffalo, in the county of Erie and State of-` New York, have invented new and useful Improvements in Turbine-Blowers, of which the following is a specification.

The object of lmy invention -is -the provision of a compact, ecient and comparatively inexpensive blower of' the turbine type capable of producing yan air pressure high enough to blow steel converters, blast furnaces and the like, where" a large volurne of air of considerable pressure' is ref. quired.

One feature of the invention consists in constructing 'the' blower of low and high pressure sections,\ in such manner that the free air is lreceived by the low 'pressure 'sectionand compressed yto a certain degree and thence delivered tothe-high pressure secstructural features `desig'nedito] reduce the" weight of the machine' and facilitate the' l A i t-ion where it is furtherv compressed tothe desired degree for use, thus producing practically a compound turbine blower.

Another feature of the invention consists .in constructing the fans or propellers and their cases of rogress'ively decreasing' area or dimensions in order to reduce its volume 'and increaseits pressure as it passes throu h the several stages from the inlet tothe ehe invention consists further in certain assemblage of its parts.. In the accompanyin .drawings consisting of 4 sheetszFigui'e 1 is a sidenelevation of the improved blower, with thebed plate shown in section. Figl1j2 isalongitudinal central section thereof, (in air-,enlarged scale.

Fig'. 3 is a rear oflthe blower withther @shaft shown sectionaf; Figs- 4- and 5- are 1 transverse sections, on the' corres' ondin'gly-v numbered lines in Fig. y2. Fig. is a frag'- inentary longitudinal section of one of the air propeller-S, 'showing' its packing ring. Figs. 7 and 8 are transverse sections on' lines 7-7 and 8 8, Fig.l 1. Fig. '9'is asimilar section on line 9-'9, 2. Fig. 10 is a longitudinal central 4section ofv a modified construct-ion of the blower.

Similar letters of reference indicate corresponding parts throughout the several views.- Referring to the embodiment of the inventionl 'shown in Figs. `l-9, A indicates the casi-n of the machine, preferably of cylin-v inlet fan or propeller Bg and one'or more low pressure fans or propellers C arranged respectively in chambers B1 C1 of the casing and both securedA to a shaft al sup orted in suitable bearings D, D1. The sha t may be driven by a'motor of any suitable or desired type, but I- prefer to use a steam turbine. An air inlet 4connection e leads to the iirstinlet chamber B1' and the latter com'inunicates withthev propeller chamber C1 by a passage e1. e Both the' inlet propeller B and the lowrassure propeller C may have ordinary an-bla'des, if desired, ,but the inlet propelleris preferably constructed to grasp man@ mais, wie. f

' dric'a form and stiifened by ribs a. The low kpressure section of the blower comprises an and draw a comparatively large volume o'f similar to the inlet propeller B, aseries of high pressure fans or Propellers G,"G1,. G2,

Gra similar .to vthe low pressure fanC, but

preferably of somewhat smaller diameter, "a chamber. F1 containingthe supply-propel- 2 low pressure i' h.

ler,and air chambers orreceivers H, H1,

alternating with said vhigh-pressure propel- 1ers and located on the inlet sides` thereof,

on a common shaft i supported in the intermediate bearing D1 and a rear bearing I.

This shaft is independent of the shaft'd and adapted to be drivenYY atl a higherqspe'ed by a' motor' -of any suitable construction, al'- respectively in propeller chambers Tg, 91,

respectively. The supply propeller F and said high-pres'su're propellers are mounted .though I'prefer a steam. turbine. The sev-J' v eral propellers G, G1,"Gr2, Gt'are arranged 100 f are connected by similar perforated webs h..

or reservoir F1 communicates with the fan .chamber C1 by an annular passage y' arranged near the periphery ofsaid chambers, and with the chamber g of the first high pressure propeller by an annular passage 7'1 arranged near theA center of said chambers. Each of the receivers H-I-I2, communicates near its periphery with the propeller chamber in rear thereof by a passage la, and near its center with the`propeller chamber in front thereof by a passage k1, while the peripheral passage 7a2 of the last propeller chamber leads into the outlet or delivery connectionl L of the blower.

In order to stien the casing of the machine and permit a lighter construction thereof, the supply chamber F1 is provided with perforated radial webs f extending from the front to the rear wall of said chamber and from its cylindrical wall lto the bearing D1. For the samevpurpose, the front and rear walls ofthe receivers H'-H2 To facilitate the construction and assemblage of the parts, said receivers are preferably divided horizontally into upper and lower sections cast separate from the casing A and interlocked therewith by coperating tongues m and grooves m1' formed on-these parts and secured thereto -by bolts m2, as shown in Fig. 2. The receivers mayv however be securedinplace by any other suit-- able means.

To admit the receivers and other internal parts, the casing A isdivided horizontally into upper andflower halves or sections which are secured together by bolts o, as shown in Fig. 2.

` receivers form the side walls of the highi end of the machine, as shown in Fig. 2, the

dimensions of the receivers H H2 being correspondingly graduated.

As shown 1n Figs. 1 and provided in one side with a recess or housing n leading toytheV intermediate shaftbearing D1, and isolated from the interior of 'the' casing. The lower part of this bearing is locatedwithin they casing, while its removable cap 4or upper part is located within said recess or housing, as shown. By this construction, said bearing cap can be removed wlthout permitting air to escape from the casing, enabling the bearing to be mspected without stopping the blower and Without the necessity of removing the topsectlon of the casing.

The receivers H, H1',

The sides of these By this construction, the receivers.

7 the casing isl H2 are provided cen- V trally with hubs or thimbles p which loosely surround the shaft i and abut at their ends against the hubs of the adjacent propellers. The bore of the hub of each of the receivers H-H2 is made larger in diameter than the periphery of the shaft z' and out of contact therewith so as to prevent the shaft from engaging with the boreof the receivers when this shaft i orv the bearings D1, I become worn and the shaft drops slightly. Suitable packings are interposed between these hubs and thimbles and between the last propeller G3 and the rear wall of its chamber to form practically air tight joints. The preferred .packing (best shown in Fig. 6) consists of a spring-pressed ring g1 seated in an annular groove in the end ofthe propeller hub and bearing againstthe adjacent hub or wall. i

vThe operation of the blower is as'lfollows:

The shaft d of the inlet propeller B and the l low pressure propeller C is driven at a comparatively low speed, while the shaftj( of the high pressure propellers G--GB 1s thus grasped by the inlet propeller 'B is somewhat compressed in the inlet chamber l vB1 and delivered intol the chamber C1 of the low-pressure propeller C which after ,fur-

ther compressing it, eXpels it into the supply chamber F1 of the high-pressure propellers. From` this chamber the partly-compressed air is taken by the scoop-propeller F and forced into the chamber g of the first high-pressure propeller G, which latter in turn forcesv the air through the exit-passage c into the Areceiver H, whence the air is successively forced by the propellers G1,

G2 and G3 through thevremaining chambers 1, g2, g3 or stages of the machine until it 1s finally discharged through the outlet connection in a highly compressed state and delivered to the blast furnace or other apparatus. As the air is forced through the several stages', its pressure is increased or compounded, this efl'ect being increased by the progressive 'diminution of the dimensions of the high-pressure propellers andthe intervening receivers hereinbefore described.

It will be understood from the foregoing that the efiiciency of this compound turbine v bloweris due to grasping a maximum volume of free air andconveying it through the low-pressure stage or stages into. a receiverl which thus furnishes a large Yvolume of partly compressed'air to the high-pressure propellers .which latter owing to their greater speed further compress the air to the desired pressure.

`if'. desired.. es feature of gradins the pressing the air by stages with'the advantage of a strong andi compact construction of the rotary e ei tipliedhorizontally for by t Iwidth of the pressure fansor propellers may be combined with anair supply fan or scoop- .fap without the use` of a low-pressure proe er. gh'own in Fig. 10, in which .G4-G7 indicate the pressure-fans, and B2. .the scoop-fan. v By mounting thehigli and low` pressure propellers side by side on `independentlydrivcn shafts which are arranged endto end, I combinethe advantage of gradually comnents `or propellers which permits propeller-units to be added or mulincreasing the capacit of the-machine. The propellers can the great centrifugal strain to whichl they are subjected, without requiring an unduly heavy and expensive construction thereof. When suchfans or propellers' are arranged concentrically as has hitherto been proposed,

the outer orlarge ones must be made of considerable diameter in order to obtain a ma-. chine of comparatively large capacity,l In.

a blower of large capacity, such as required for blast furnaces and converters, this concenti-ic form would not only render the machine objectionably tall and expensive, but the increased diameter of the outer propeller or propellers which obviously travel at the highest peripheral speed and under the greatest strain,

' strength, owing to the length of their arms or the diameter of their webs, requiring them to be made so heavy as to render this concentric type of blower impracticable for large machines.

`l claim as my invention:

l. A compound turbine blower comprising a low pressure air ropeller, a high pressure air propeller w ich receives the air from said low pressure and liighpressure'prope ers ing mOunbd side by side on independent shafts arranged l"end to end', and' means V for independently. I

driving said shafts.

2. A lcompound turbine blower comprising a low'pre'ssure airA propeller, ahighf pressure air propeller which rece).v es the air from air ropeller which receives Athe air the low and high saidlow pressure prop ler, the'y low and by side on independent shafts arranged end to end, andl independent motors for driving said propellei'satdiiierent speeds.

3.' A compound turbine blower comprising a low pressure air propeller, a hi'gh pressure from said' ow pressure propeller, pressure. propellers beine mounted side by side-on inde ndent shafts arranged en to end, means` or independently driving sl id Such a modified construction :is

iis construction and 'arrangement be made of comparatively small diameterto aiord the necessaryl strength to withstand would have the least ro eller', the low shaft yan high pressure propellers being mounted side shafts, said low and high pressure Propellers, said chamber receiving the air from the low pressure propeller and delivering it pressure propeller. i Y

Y 4. A compound turbine blower comprising a case containing a series of propeller-chamand van. air chamber located between bers arrai'iged side by side, a plurality of lpressure-pro ellersarranged in said cham- 4 ers and eac delivering air'to the succeedbeingv constructed of progressively-decreas- `ing chamber, saidchambersland propellers ing dimensions toward' the outlet of the 'l blower,- andan air-gathering and supply fan having 'scoop-shaped blades and arian ed to deliver air into the first of saidprope erl chambers?.

- 5. A compound propeller ,arranged to de iver' the incoming 'turbine blower, compris-v ing a low-pressure air ropellenan inletair to thev 'low-pressure. propeller, a plurality .of high-pressure arr-Propellers, and av supply propeller interposed ,between said low-pressure propeller and: therstofthe Y ent shafts having their inner ends supported in said bearing, a-.low-pressure propellerA mounted on one-of said shafts, a highressure propeller mounted on the other s aft,

ropellers, Y between pro' eller an the :rst o iver the incoming Vice-v shaft bearing arranged. therein, independthelow-pressure propeller `delivering air to the high-pressure propeller, and means for driving said shafts' at different speeds.

' 8. A turbine blower, comprisiii acase having an air inlet and an outlet, ont and rear bearings located at opposite ends of the case, aninterinediate-bearing arranged within'the case', a front shaft mounted .in said front and intermediate bearings, a rear shaft independent lof said frontsliaft mounted in said rear and intermediate bearinlgs, 'independent motors fo said shaftsya owressure air. ropeller mountedfon said Ont "a high "-pressuregarropeller vmounted on said? rear shaft, said oW-presiic sure propeller deliverlgllftozthe high'- pressurepropeller; 1 f

9. -A tu bine blower, comprising-'a case, a

shaft airan'ged'therein and carrying an air.- propel'ler, said case having an vexternal rearranged fin said recess.

io, A iurpinefbiqyer, eomfsifigingf i case' 12's cess isolated froinjth'e' interior jt hereoi, andv a kbearinv .forsaid shaft lia-ving a lower part arrange v1n the'case and a removable .l cap.

fijan..

I aratefrom the case and extending from said divided horizontally ntoupper and lower shaft to the `peripheral Wall of the case, and sections, means for securing said sections tomeans for securing said receivers to the case. l10 gether, 'a shaft arranged centrally in the Witness my hand this 18th day of August,

case, air propellers mounted on said shaft, 1910. 4 air receivers 'alternating with said Propellers PATRICK H. KANE. and divided into sections corresponding with Witnesses:

those of the case, said receivers beingsepl THEO. L. Porr, g

ANNA HEIGIS. 

